AutoCodes – Generic – B1D4A

B1D4A Code - Memory Switch Input Stuck

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Door Module receives a conflicting input from the Memory Select Switch Mux circuit for more than 30 seconds. Common causes include Faulty Memory Set Switch, Memory Set Switch harness is open or shorted, Memory Set Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1D4A indicates Memory Switch Input Stuck.
Common causes: Common causes include Faulty Memory Set Switch, Memory Set Switch harness is open or shorted, Memory Set Switch circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 3,024

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 29, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1D4A Description

The Diagnostic Trouble Code (DTC) sets when the Door Module receives a conflicting input from the Memory Select Switch Mux circuit for more than 30 seconds.

OBDII Code B1D4A - Memory Switch Input Stuck - AutoCodes.com — B1D4A Code - Memory Switch Input Stuck

What does this mean?

What are the Possible Causes of the DTC B1D4A?

Faulty Memory Set Switch
Memory Set Switch harness is open or shorted
Memory Set Switch circuit poor electrical connection
Faulty Door Module

How to Fix the DTC B1D4A?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1D4A code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1D4A code?

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Information for Specific Makes

B1D4A Chrysler — Memory Switch Input Stuck
B1D4A Dodge — Memory Switch Input Stuck
B1D4A Jeep — Memory Switch Input Stuck
B1D4A RAM — Memory Switch Input Stuck

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1D4A Code

1. What does OBDII code B1D4A mean?

Code B1D4A indicates that the Memory Switch Input is stuck, meaning the vehicle's memory seat or position adjustment system is not responding correctly due to a stuck input signal.

2. What are the common symptoms of code B1D4A?

Common symptoms include unresponsive memory seat functions, inability to save or recall seat positions, or the memory switch being physically stuck.

3. What causes code B1D4A to appear?

This code can be caused by a faulty memory switch, damaged wiring or connectors, electrical short circuits, or software issues in the seat control module.

4. Can a stuck button on the memory switch trigger code B1D4A?

Yes, a physically stuck or damaged memory button can cause the input signal to remain active, triggering this code.

5. How can I diagnose code B1D4A?

Start by inspecting the memory switch for physical damage, check the wiring and connectors for corrosion or breaks, and use a scan tool to monitor the switch input signal.

6. Is code B1D4A serious?

While it doesnâ€™t affect vehicle drivability, it can be inconvenient as it disables memory seat functions, which might impact comfort and convenience.

7. How do I fix code B1D4A?

Repairs may include replacing the memory switch if itâ€™s faulty, repairing damaged wiring or connectors, or resetting the seat control module.

8. Can low battery voltage cause code B1D4A?

Yes, low voltage or a weak battery can sometimes cause electrical components, including the memory switch, to malfunction.

9. Will clearing the code fix the problem?

Clearing the code may temporarily reset the system, but if the underlying issue isnâ€™t resolved, the code will likely return.

10. Should I take my car to a mechanic for code B1D4A?

If youâ€™re unable to identify or fix the issue yourself, itâ€™s recommended to have a qualified mechanic inspect the memory seat system and perform necessary repairs.